25415051 has 4 divisors (see below), whose sum is σ = 26910072. Its totient is φ = 23920032.

The previous prime is 25415029. The next prime is 25415053. The reversal of 25415051 is 15051452.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25415051 - 2¹⁰ = 25414027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25415053) 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, 747485 + ... + 747518.

It is an arithmetic number, because the mean of its divisors is an integer number (6727518).

Almost surely, 2^25415051 is an apocalyptic number.

25415051 is a deficient number, since it is larger than the sum of its proper divisors (1495021).

25415051 is a wasteful number, since it uses less digits than its factorization.

25415051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495020.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 25415051 is about 5041.3342479943. The cubic root of 25415051 is about 294.0110559342.

The spelling of 25415051 in words is "twenty-five million, four hundred fifteen thousand, fifty-one".