25263401 has 6 divisors (see below), whose sum is σ = 25427706. Its totient is φ = 25100000.

The previous prime is 25263391. The next prime is 25263431. The reversal of 25263401 is 10436252.

It can be written as a sum of positive squares in only one way, i.e., 25200400 + 63001 = 5020^2 + 251^2 .

It is not a de Polignac number, because 25263401 - 2¹⁴ = 25247017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25263431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62801 + ... + 63201.

It is an arithmetic number, because the mean of its divisors is an integer number (4237951).

Almost surely, 2^25263401 is an apocalyptic number.

It is an amenable number.

25263401 is a deficient number, since it is larger than the sum of its proper divisors (164305).

25263401 is an frugal number, since it uses more digits than its factorization.

25263401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 25263401 is about 5026.2710830197. The cubic root of 25263401 is about 293.4251071600.

Adding to 25263401 its reverse (10436252), we get a palindrome (35699653).

The spelling of 25263401 in words is "twenty-five million, two hundred sixty-three thousand, four hundred one".