25127267540 has 24 divisors (see below), whose sum is σ = 52836999432. Its totient is φ = 10037623680.

The previous prime is 25127267491. The next prime is 25127267563. The reversal of 25127267540 is 4576272152.

It can be written as a sum of positive squares in 4 ways, for example, as 240312004 + 24886955536 = 15502^2 + 157756^2 .

It is a congruent number.

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, 814691 + ... + 844970.

It is an arithmetic number, because the mean of its divisors is an integer number (2201541643).

Almost surely, 2^25127267540 is an apocalyptic number.

25127267540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25127267540 is an abundant number, since it is smaller than the sum of its proper divisors (27709731892).

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

25127267540 is a wasteful number, since it uses less digits than its factorization.

25127267540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660427 (or 1660425 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 41.

The spelling of 25127267540 in words is "twenty-five billion, one hundred twenty-seven million, two hundred sixty-seven thousand, five hundred forty".