2575640940 has 48 divisors (see below), whose sum is σ = 7232517600. Its totient is φ = 684864000.

The previous prime is 2575640927. The next prime is 2575640953. The reversal of 2575640940 is 490465752.

It is an interprime number because it is at equal distance from previous prime (2575640927) and next prime (2575640953).

It is a junction number, because it is equal to n+sod(n) for n = 2575640892 and 2575640901.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40561 + ... + 82440.

It is an arithmetic number, because the mean of its divisors is an integer number (150677450).

Almost surely, 2^2575640940 is an apocalyptic number.

2575640940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2575640940 is an abundant number, since it is smaller than the sum of its proper divisors (4656876660).

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

2575640940 is a wasteful number, since it uses less digits than its factorization.

2575640940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123362 (or 123360 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The square root of 2575640940 is about 50750.7728019978. The cubic root of 2575640940 is about 1370.7611058500.

The spelling of 2575640940 in words is "two billion, five hundred seventy-five million, six hundred forty thousand, nine hundred forty".