2512562640 has 160 divisors (see below), whose sum is σ = 8916381696. Its totient is φ = 573350400.

The previous prime is 2512562623. The next prime is 2512562653. The reversal of 2512562640 is 462652152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1764969 + ... + 1766391.

Almost surely, 2^2512562640 is an apocalyptic number.

2512562640 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 2512562640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4458190848).

2512562640 is an abundant number, since it is smaller than the sum of its proper divisors (6403819056).

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

2512562640 is a wasteful number, since it uses less digits than its factorization.

2512562640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2497 (or 2491 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 2512562640 is about 50125.4689753622. The cubic root of 2512562640 is about 1359.4783610771.

The spelling of 2512562640 in words is "two billion, five hundred twelve million, five hundred sixty-two thousand, six hundred forty".