25148452979 has 8 divisors (see below), whose sum is σ = 27092868432. Its totient is φ = 23205454560.

The previous prime is 25148452961. The next prime is 25148452999. The reversal of 25148452979 is 97925484152.

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 25148452979 - 2¹⁶ = 25148387443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25148452999) 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, 317249 + ... + 388514.

It is an arithmetic number, because the mean of its divisors is an integer number (3386608554).

Almost surely, 2^25148452979 is an apocalyptic number.

25148452979 is a deficient number, since it is larger than the sum of its proper divisors (1944415453).

25148452979 is a wasteful number, since it uses less digits than its factorization.

25148452979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708517.

The product of its digits is 7257600, while the sum is 56.

The spelling of 25148452979 in words is "twenty-five billion, one hundred forty-eight million, four hundred fifty-two thousand, nine hundred seventy-nine".