25751401 has 4 divisors (see below), whose sum is σ = 27732292. Its totient is φ = 23770512.

The previous prime is 25751399. The next prime is 25751419. The reversal of 25751401 is 10415752.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11696400 + 14055001 = 3420^2 + 3749^2 .

It is a cyclic number.

It is not a de Polignac number, because 25751401 - 2¹ = 25751399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25751471) 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, 990426 + ... + 990451.

It is an arithmetic number, because the mean of its divisors is an integer number (6933073).

Almost surely, 2^25751401 is an apocalyptic number.

It is an amenable number.

25751401 is a deficient number, since it is larger than the sum of its proper divisors (1980891).

25751401 is a wasteful number, since it uses less digits than its factorization.

25751401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980890.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 25751401 is about 5074.5838253004. The cubic root of 25751401 is about 295.3023845681.

The spelling of 25751401 in words is "twenty-five million, seven hundred fifty-one thousand, four hundred one".