25051001 has 4 divisors (see below), whose sum is σ = 25403904. Its totient is φ = 24698100.

The previous prime is 25050989. The next prime is 25051003. The reversal of 25051001 is 10015052.

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 25051001 - 2⁶ = 25050937 is a prime.

It is a super-2 number, since 2×25051001² = 1255105302204002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25051003) 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, 176345 + ... + 176486.

It is an arithmetic number, because the mean of its divisors is an integer number (6350976).

Almost surely, 2^25051001 is an apocalyptic number.

It is an amenable number.

25051001 is a deficient number, since it is larger than the sum of its proper divisors (352903).

25051001 is an equidigital number, since it uses as much as digits as its factorization.

25051001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352902.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 25051001 is about 5005.0975015478. The cubic root of 25051001 is about 292.6004758673.

Adding to 25051001 its reverse (10015052), we get a palindrome (35066053).

The spelling of 25051001 in words is "twenty-five million, fifty-one thousand, one".