2102520252400 has 30 divisors (see below), whose sum is σ = 5051304907352. Its totient is φ = 841008100800.

The previous prime is 2102520252383. The next prime is 2102520252401. The reversal of 2102520252400 is 42520252012.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102520252401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2628149916 + ... + 2628150715.

Almost surely, 2^{2102520252400} is an apocalyptic number.

2102520252400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102520252400 is an abundant number, since it is smaller than the sum of its proper divisors (2948784654952).

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

2102520252400 is a wasteful number, since it uses less digits than its factorization.

2102520252400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5256300649 (or 5256300638 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The spelling of 2102520252400 in words is "two trillion, one hundred two billion, five hundred twenty million, two hundred fifty-two thousand, four hundred".