2525165464840 has 32 divisors (see below), whose sum is σ = 5685051305880. Its totient is φ = 1009456584192.

The previous prime is 2525165464781. The next prime is 2525165464841. The reversal of 2525165464840 is 484645615252.

It can be written as a sum of positive squares in 4 ways, for example, as 2419835358724 + 105330106116 = 1555582^2 + 324546^2 .

It is a super-2 number, since 2×2525165464840² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2525165464841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18982947 + ... + 19115506.

Almost surely, 2^{2525165464840} is an apocalyptic number.

2525165464840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2525165464840 is an abundant number, since it is smaller than the sum of its proper divisors (3159885841040).

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

2525165464840 is a wasteful number, since it uses less digits than its factorization.

2525165464840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38100121 (or 38100117 counting only the distinct ones).

The product of its (nonzero) digits is 9216000, while the sum is 52.

The spelling of 2525165464840 in words is "two trillion, five hundred twenty-five billion, one hundred sixty-five million, four hundred sixty-four thousand, eight hundred forty".