80778377925 has 240 divisors, whose sum is σ = 183708976000. Its totient is φ = 34978003200.

The previous prime is 80778377893. The next prime is 80778377941. The reversal of 80778377925 is 52977387708.

It is not a de Polignac number, because 80778377925 - 2⁵ = 80778377893 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 13193865 + ... + 13199985.

Almost surely, 2^80778377925 is an apocalyptic number.

It is an amenable number.

80778377925 is an abundant number, since it is smaller than the sum of its proper divisors (102930598075).

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

80778377925 is a wasteful number, since it uses less digits than its factorization.

80778377925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6183 (or 6155 counting only the distinct ones).

The product of its (nonzero) digits is 41489280, while the sum is 63.

The spelling of 80778377925 in words is "eighty billion, seven hundred seventy-eight million, three hundred seventy-seven thousand, nine hundred twenty-five".