25760977 has 4 divisors (see below), whose sum is σ = 28102896. Its totient is φ = 23419060.

The previous prime is 25760957. The next prime is 25760981. The reversal of 25760977 is 77906752.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25760977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25760927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1170943 + ... + 1170964.

It is an arithmetic number, because the mean of its divisors is an integer number (7025724).

Almost surely, 2^25760977 is an apocalyptic number.

It is an amenable number.

25760977 is a deficient number, since it is larger than the sum of its proper divisors (2341919).

25760977 is a wasteful number, since it uses less digits than its factorization.

25760977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2341918.

The product of its (nonzero) digits is 185220, while the sum is 43.

The square root of 25760977 is about 5075.5272632506. The cubic root of 25760977 is about 295.3389840679.

The spelling of 25760977 in words is "twenty-five million, seven hundred sixty thousand, nine hundred seventy-seven".