25653541 has 4 divisors (see below), whose sum is σ = 25823584. Its totient is φ = 25483500.

The previous prime is 25653521. The next prime is 25653547. The reversal of 25653541 is 14535652.

25653541 = T₄₁₃₄ + T₄₁₃₅ + T₄₁₃₆.

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 not a de Polignac number, because 25653541 - 2¹³ = 25645349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25653547) 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, 84795 + ... + 85096.

It is an arithmetic number, because the mean of its divisors is an integer number (6455896).

Almost surely, 2^25653541 is an apocalyptic number.

25653541 is the 4136-th centered triangular number.

It is an amenable number.

25653541 is a deficient number, since it is larger than the sum of its proper divisors (170043).

25653541 is a wasteful number, since it uses less digits than its factorization.

25653541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170042.

The product of its digits is 18000, while the sum is 31.

The square root of 25653541 is about 5064.9324773387. The cubic root of 25653541 is about 294.9278421618.

The spelling of 25653541 in words is "twenty-five million, six hundred fifty-three thousand, five hundred forty-one".