1525422613 has 16 divisors (see below), whose sum is σ = 1814803200. Its totient is φ = 1263862080.

The previous prime is 1525422607. The next prime is 1525422617. The reversal of 1525422613 is 3162245251.

It is a de Polignac number, because none of the positive numbers 2^k-1525422613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1525422617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56218 + ... + 78811.

It is an arithmetic number, because the mean of its divisors is an integer number (113425200).

Almost surely, 2^1525422613 is an apocalyptic number.

1525422613 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1525422613 is a deficient number, since it is larger than the sum of its proper divisors (289380587).

1525422613 is a wasteful number, since it uses less digits than its factorization.

1525422613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135132.

The product of its digits is 14400, while the sum is 31.

The square root of 1525422613 is about 39056.6590097003. The cubic root of 1525422613 is about 1151.1450757062.

Adding to 1525422613 its reverse (3162245251), we get a palindrome (4687667864).

The spelling of 1525422613 in words is "one billion, five hundred twenty-five million, four hundred twenty-two thousand, six hundred thirteen".