25515941 has 4 divisors (see below), whose sum is σ = 27835584. Its totient is φ = 23196300.

The previous prime is 25515937. The next prime is 25515967. The reversal of 25515941 is 14951552.

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 25515941 - 2² = 25515937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25515898 and 25515907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25515991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1159805 + ... + 1159826.

It is an arithmetic number, because the mean of its divisors is an integer number (6958896).

Almost surely, 2^25515941 is an apocalyptic number.

It is an amenable number.

25515941 is a deficient number, since it is larger than the sum of its proper divisors (2319643).

25515941 is a wasteful number, since it uses less digits than its factorization.

25515941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2319642.

The product of its digits is 9000, while the sum is 32.

The square root of 25515941 is about 5051.3306167781. The cubic root of 25515941 is about 294.3995870064.

The spelling of 25515941 in words is "twenty-five million, five hundred fifteen thousand, nine hundred forty-one".