25672572340 has 12 divisors (see below), whose sum is σ = 53912401956. Its totient is φ = 10269028928.

The previous prime is 25672572337. The next prime is 25672572347. The reversal of 25672572340 is 4327527652.

It can be written as a sum of positive squares in 2 ways, for example, as 6062491044 + 19610081296 = 77862^2 + 140036^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25672572347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641814289 + ... + 641814328.

It is an arithmetic number, because the mean of its divisors is an integer number (4492700163).

Almost surely, 2^25672572340 is an apocalyptic number.

25672572340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25672572340 is an abundant number, since it is smaller than the sum of its proper divisors (28239829616).

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

25672572340 is a wasteful number, since it uses less digits than its factorization.

25672572340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283628626 (or 1283628624 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 43.

The spelling of 25672572340 in words is "twenty-five billion, six hundred seventy-two million, five hundred seventy-two thousand, three hundred forty".