2575402221 has 48 divisors (see below), whose sum is σ = 4137619968. Its totient is φ = 1419264000.

The previous prime is 2575402211. The next prime is 2575402231. The reversal of 2575402221 is 1222045752.

It is an interprime number because it is at equal distance from previous prime (2575402211) and next prime (2575402231).

It is not a de Polignac number, because 2575402221 - 2¹⁰ = 2575401197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2575402201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1607821 + ... + 1609421.

It is an arithmetic number, because the mean of its divisors is an integer number (86200416).

Almost surely, 2^2575402221 is an apocalyptic number.

2575402221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2575402221 is a deficient number, since it is larger than the sum of its proper divisors (1562217747).

2575402221 is a wasteful number, since it uses less digits than its factorization.

2575402221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002 (or 1995 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 2575402221 is about 50748.4208719838. The cubic root of 2575402221 is about 1370.7187556366.

Adding to 2575402221 its reverse (1222045752), we get a palindrome (3797447973).

The spelling of 2575402221 in words is "two billion, five hundred seventy-five million, four hundred two thousand, two hundred twenty-one".