25148969 has 4 divisors (see below), whose sum is σ = 25171344. Its totient is φ = 25126596.

The previous prime is 25148947. The next prime is 25149017. The reversal of 25148969 is 96984152.

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 25148969 - 2²⁰ = 24100393 is a prime.

It is a super-2 number, since 2×25148969² = 1264941283525922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25148069) 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, 9407 + ... + 11780.

It is an arithmetic number, because the mean of its divisors is an integer number (6292836).

Almost surely, 2^25148969 is an apocalyptic number.

It is an amenable number.

25148969 is a deficient number, since it is larger than the sum of its proper divisors (22375).

25148969 is a wasteful number, since it uses less digits than its factorization.

25148969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22374.

The product of its digits is 155520, while the sum is 44.

The square root of 25148969 is about 5014.8747741095. The cubic root of 25148969 is about 292.9814080388.

The spelling of 25148969 in words is "twenty-five million, one hundred forty-eight thousand, nine hundred sixty-nine".