25394903332 has 6 divisors (see below), whose sum is σ = 44441080838. Its totient is φ = 12697451664.

The previous prime is 25394903323. The next prime is 25394903333. The reversal of 25394903332 is 23330949352.

It can be written as a sum of positive squares in only one way, i.e., 24359093476 + 1035809856 = 156074^2 + 32184^2 .

It is a super-2 number, since 2×25394903332² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25394903333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3174362913 + ... + 3174362920.

Almost surely, 2^25394903332 is an apocalyptic number.

It is an amenable number.

25394903332 is a deficient number, since it is larger than the sum of its proper divisors (19046177506).

25394903332 is a wasteful number, since it uses less digits than its factorization.

25394903332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6348725837 (or 6348725835 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 43.

The spelling of 25394903332 in words is "twenty-five billion, three hundred ninety-four million, nine hundred three thousand, three hundred thirty-two".