25154661 has 16 divisors (see below), whose sum is σ = 38873088. Its totient is φ = 14170800.

The previous prime is 25154641. The next prime is 25154669. The reversal of 25154661 is 16645152.

It is not a de Polignac number, because 25154661 - 2⁹ = 25154149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25154669) 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, 6945 + ... + 9926.

It is an arithmetic number, because the mean of its divisors is an integer number (2429568).

Almost surely, 2^25154661 is an apocalyptic number.

25154661 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25154661 is a deficient number, since it is larger than the sum of its proper divisors (13718427).

25154661 is a wasteful number, since it uses less digits than its factorization.

25154661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16952.

The product of its digits is 7200, while the sum is 30.

The square root of 25154661 is about 5015.4422536801. The cubic root of 25154661 is about 293.0035099969.

The spelling of 25154661 in words is "twenty-five million, one hundred fifty-four thousand, six hundred sixty-one".