25677769380 has 48 divisors (see below), whose sum is σ = 72098087040. Its totient is φ = 6828325888.

The previous prime is 25677769291. The next prime is 25677769387. The reversal of 25677769380 is 8396777652.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (25677769387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 574509 + ... + 617588.

It is an arithmetic number, because the mean of its divisors is an integer number (1502043480).

Almost surely, 2^25677769380 is an apocalyptic number.

25677769380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25677769380 is an abundant number, since it is smaller than the sum of its proper divisors (46420317660).

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

25677769380 is a wasteful number, since it uses less digits than its factorization.

25677769380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192468 (or 1192466 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 60.

The spelling of 25677769380 in words is "twenty-five billion, six hundred seventy-seven million, seven hundred sixty-nine thousand, three hundred eighty".