2521251200 has 96 divisors (see below), whose sum is σ = 6707487360. Its totient is φ = 930908160.

The previous prime is 2521251197. The next prime is 2521251203. The reversal of 2521251200 is 21521252.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2521251197) and next prime (2521251203).

It is a super-2 number, since 2×2521251200² = 12713415227002880000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521251203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11297 + ... + 71903.

It is an arithmetic number, because the mean of its divisors is an integer number (69869660).

Almost surely, 2^2521251200 is an apocalyptic number.

2521251200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2521251200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3353743680).

2521251200 is an abundant number, since it is smaller than the sum of its proper divisors (4186236160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2521251200 is a wasteful number, since it uses less digits than its factorization.

2521251200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60644 (or 60627 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 2521251200 is about 50212.0622958269. The cubic root of 2521251200 is about 1361.0436049757.

Adding to 2521251200 its reverse (21521252), we get a palindrome (2542772452).

The spelling of 2521251200 in words is "two billion, five hundred twenty-one million, two hundred fifty-one thousand, two hundred".