25025401 has 6 divisors (see below), whose sum is σ = 25859706. Its totient is φ = 24217200.

The previous prime is 25025389. The next prime is 25025417. The reversal of 25025401 is 10452052.

It can be written as a sum of positive squares in only one way, i.e., 24601600 + 423801 = 4960^2 + 651^2 .

It is not a de Polignac number, because 25025401 - 2⁹ = 25024889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25025461) 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, 12060 + ... + 13981.

It is an arithmetic number, because the mean of its divisors is an integer number (4309951).

Almost surely, 2^25025401 is an apocalyptic number.

It is an amenable number.

25025401 is a deficient number, since it is larger than the sum of its proper divisors (834305).

25025401 is an equidigital number, since it uses as much as digits as its factorization.

25025401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26103 (or 26072 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 25025401 is about 5002.5394551168. The cubic root of 25025401 is about 292.5007709333.

Adding to 25025401 its reverse (10452052), we get a palindrome (35477453).

It can be divided in two parts, 250 and 25401, that added together give a triangular number (25651 = T₂₂₆).

The spelling of 25025401 in words is "twenty-five million, twenty-five thousand, four hundred one".