25315415102 has 4 divisors (see below), whose sum is σ = 37973122656. Its totient is φ = 12657707550.

The previous prime is 25315415101. The next prime is 25315415159. The reversal of 25315415102 is 20151451352.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25315415101) 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, 6328853774 + ... + 6328853777.

It is an arithmetic number, because the mean of its divisors is an integer number (9493280664).

Almost surely, 2^25315415102 is an apocalyptic number.

25315415102 is a deficient number, since it is larger than the sum of its proper divisors (12657707554).

25315415102 is a wasteful number, since it uses less digits than its factorization.

25315415102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12657707553.

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 25315415102 its reverse (20151451352), we get a palindrome (45466866454).

The spelling of 25315415102 in words is "twenty-five billion, three hundred fifteen million, four hundred fifteen thousand, one hundred two".