25251401 has 8 divisors (see below), whose sum is σ = 30113664. Its totient is φ = 20702880.

The previous prime is 25251397. The next prime is 25251403. The reversal of 25251401 is 10415252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25251401 - 2² = 25251397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25251403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78260 + ... + 78581.

It is an arithmetic number, because the mean of its divisors is an integer number (3764208).

Almost surely, 2^25251401 is an apocalyptic number.

It is an amenable number.

25251401 is a deficient number, since it is larger than the sum of its proper divisors (4862263).

25251401 is a wasteful number, since it uses less digits than its factorization.

25251401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156871.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 25251401 is about 5025.0772133371. The cubic root of 25251401 is about 293.3786412739.

Adding to 25251401 its reverse (10415252), we get a palindrome (35666653).

It can be divided in two parts, 25251 and 401, that added together give a palindrome (25652).

The spelling of 25251401 in words is "twenty-five million, two hundred fifty-one thousand, four hundred one".