25121469 has 4 divisors (see below), whose sum is σ = 33495296. Its totient is φ = 16747644.

The previous prime is 25121443. The next prime is 25121471. The reversal of 25121469 is 96412152.

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 not a de Polignac number, because 25121469 - 2⁹ = 25120957 is a prime.

It is a super-2 number, since 2×25121469² = 1262176409435922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25121419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4186909 + ... + 4186914.

It is an arithmetic number, because the mean of its divisors is an integer number (8373824).

Almost surely, 2^25121469 is an apocalyptic number.

It is an amenable number.

25121469 is a deficient number, since it is larger than the sum of its proper divisors (8373827).

25121469 is an equidigital number, since it uses as much as digits as its factorization.

25121469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8373826.

The product of its digits is 4320, while the sum is 30.

The square root of 25121469 is about 5012.1321810184. The cubic root of 25121469 is about 292.8745789115.

The spelling of 25121469 in words is "twenty-five million, one hundred twenty-one thousand, four hundred sixty-nine".