25648977 has 8 divisors (see below), whose sum is σ = 34224064. Its totient is φ = 17086608.

The previous prime is 25648969. The next prime is 25648991. The reversal of 25648977 is 77984652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25648977 - 2³ = 25648969 is a prime.

It is a super-2 number, since 2×25648977² = 1315740042293058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25648177) 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, 3588 + ... + 8010.

It is an arithmetic number, because the mean of its divisors is an integer number (4278008).

Almost surely, 2^25648977 is an apocalyptic number.

It is an amenable number.

25648977 is a deficient number, since it is larger than the sum of its proper divisors (8575087).

25648977 is a wasteful number, since it uses less digits than its factorization.

25648977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6359.

The product of its digits is 846720, while the sum is 48.

The square root of 25648977 is about 5064.4819083496. The cubic root of 25648977 is about 294.9103510027.

The spelling of 25648977 in words is "twenty-five million, six hundred forty-eight thousand, nine hundred seventy-seven".