25427770116 has 36 divisors (see below), whose sum is σ = 69018234768. Its totient is φ = 7265077008.

The previous prime is 25427770087. The next prime is 25427770117. The reversal of 25427770116 is 61107772452.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (25427770117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21621666 + ... + 21622841.

It is an arithmetic number, because the mean of its divisors is an integer number (1917173188).

Almost surely, 2^25427770116 is an apocalyptic number.

It is an amenable number.

25427770116 is an abundant number, since it is smaller than the sum of its proper divisors (43590464652).

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

25427770116 is a wasteful number, since it uses less digits than its factorization.

25427770116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43244528 (or 43244519 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 42.

The spelling of 25427770116 in words is "twenty-five billion, four hundred twenty-seven million, seven hundred seventy thousand, one hundred sixteen".