25977261 has 16 divisors (see below), whose sum is σ = 35510400. Its totient is φ = 16885440.

The previous prime is 25977223. The next prime is 25977271. The reversal of 25977261 is 16277952.

It is a de Polignac number, because none of the positive numbers 2^k-25977261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25977271) 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, 31231 + ... + 32051.

It is an arithmetic number, because the mean of its divisors is an integer number (2219400).

Almost surely, 2^25977261 is an apocalyptic number.

It is an amenable number.

25977261 is a deficient number, since it is larger than the sum of its proper divisors (9533139).

25977261 is a wasteful number, since it uses less digits than its factorization.

25977261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076.

The product of its digits is 52920, while the sum is 39.

The square root of 25977261 is about 5096.7892834607. The cubic root of 25977261 is about 296.1632172945.

The spelling of 25977261 in words is "twenty-five million, nine hundred seventy-seven thousand, two hundred sixty-one".