25277640140 has 24 divisors (see below), whose sum is σ = 53086587792. Its totient is φ = 10110381120.

The previous prime is 25277640107. The next prime is 25277640149. The reversal of 25277640140 is 4104677252.

It is a junction number, because it is equal to n+sod(n) for n = 25277640094 and 25277640103.

It is not an unprimeable number, because it can be changed into a prime (25277640149) 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, 357095 + ... + 421985.

It is an arithmetic number, because the mean of its divisors is an integer number (2211941158).

Almost surely, 2^25277640140 is an apocalyptic number.

25277640140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25277640140 is an abundant number, since it is smaller than the sum of its proper divisors (27808947652).

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

25277640140 is a wasteful number, since it uses less digits than its factorization.

25277640140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84377 (or 84375 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 38.

The spelling of 25277640140 in words is "twenty-five billion, two hundred seventy-seven million, six hundred forty thousand, one hundred forty".