15425231002 has 4 divisors (see below), whose sum is σ = 23137846506. Its totient is φ = 7712615500.

The previous prime is 15425230973. The next prime is 15425231009. The reversal of 15425231002 is 20013252451.

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

It can be written as a sum of positive squares in only one way, i.e., 12563943921 + 2861287081 = 112089^2 + 53491^2 .

It is not an unprimeable number, because it can be changed into a prime (15425231009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3856307749 + ... + 3856307752.

Almost surely, 2^15425231002 is an apocalyptic number.

15425231002 is a deficient number, since it is larger than the sum of its proper divisors (7712615504).

15425231002 is an equidigital number, since it uses as much as digits as its factorization.

15425231002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7712615503.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 15425231002 its reverse (20013252451), we get a palindrome (35438483453).

The spelling of 15425231002 in words is "fifteen billion, four hundred twenty-five million, two hundred thirty-one thousand, two".