25144901 has 4 divisors (see below), whose sum is σ = 25171872. Its totient is φ = 25117932.

The previous prime is 25144897. The next prime is 25144909. The reversal of 25144901 is 10944152.

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 25144901 - 2² = 25144897 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25144909) 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, 12035 + ... + 13968.

It is an arithmetic number, because the mean of its divisors is an integer number (6292968).

Almost surely, 2^25144901 is an apocalyptic number.

It is an amenable number.

25144901 is a deficient number, since it is larger than the sum of its proper divisors (26971).

25144901 is an equidigital number, since it uses as much as digits as its factorization.

25144901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26970.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 25144901 is about 5014.4691643284. The cubic root of 25144901 is about 292.9656100070.

The spelling of 25144901 in words is "twenty-five million, one hundred forty-four thousand, nine hundred one".