1525264651 has 4 divisors (see below), whose sum is σ = 1526477400. Its totient is φ = 1524051904.

The previous prime is 1525264649. The next prime is 1525264661. The reversal of 1525264651 is 1564625251.

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

It is a cyclic number.

It is not a de Polignac number, because 1525264651 - 2¹ = 1525264649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1525264651.

It is not an unprimeable number, because it can be changed into a prime (1525264661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 604486 + ... + 607003.

It is an arithmetic number, because the mean of its divisors is an integer number (381619350).

Almost surely, 2^1525264651 is an apocalyptic number.

1525264651 is a deficient number, since it is larger than the sum of its proper divisors (1212749).

1525264651 is a wasteful number, since it uses less digits than its factorization.

1525264651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212748.

The product of its digits is 72000, while the sum is 37.

The square root of 1525264651 is about 39054.6367413653. The cubic root of 1525264651 is about 1151.1053395146.

The spelling of 1525264651 in words is "one billion, five hundred twenty-five million, two hundred sixty-four thousand, six hundred fifty-one".