2502257640 has 32 divisors (see below), whose sum is σ = 7506773280. Its totient is φ = 667268672.

The previous prime is 2502257629. The next prime is 2502257657. The reversal of 2502257640 is 467522052.

2502257640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2502257640² = 12522586593876739200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10425954 + ... + 10426193.

It is an arithmetic number, because the mean of its divisors is an integer number (234586665).

Almost surely, 2^2502257640 is an apocalyptic number.

2502257640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2502257640 is an abundant number, since it is smaller than the sum of its proper divisors (5004515640).

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

2502257640 is a wasteful number, since it uses less digits than its factorization.

2502257640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20852161 (or 20852157 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 2502257640 is about 50022.5713053617. The cubic root of 2502257640 is about 1357.6172305652.

Adding to 2502257640 its reverse (467522052), we get a palindrome (2969779692).

The spelling of 2502257640 in words is "two billion, five hundred two million, two hundred fifty-seven thousand, six hundred forty".