25293121 has 8 divisors (see below), whose sum is σ = 29067584. Its totient is φ = 21558960.

The previous prime is 25293109. The next prime is 25293143. The reversal of 25293121 is 12139252.

It is a happy number.

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 25293121 - 2⁹ = 25292609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25293181) 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, 8715 + ... + 11248.

It is an arithmetic number, because the mean of its divisors is an integer number (3633448).

Almost surely, 2^25293121 is an apocalyptic number.

It is an amenable number.

25293121 is a deficient number, since it is larger than the sum of its proper divisors (3774463).

25293121 is a wasteful number, since it uses less digits than its factorization.

25293121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20151.

The product of its digits is 1080, while the sum is 25.

The square root of 25293121 is about 5029.2266801169. The cubic root of 25293121 is about 293.5401243577.

The spelling of 25293121 in words is "twenty-five million, two hundred ninety-three thousand, one hundred twenty-one".