1525362481 has 8 divisors (see below), whose sum is σ = 1574797824. Its totient is φ = 1476359280.

The previous prime is 1525362431. The next prime is 1525362491. The reversal of 1525362481 is 1842635251.

It is the 15945-th star number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1525362481 - 2⁹ = 1525361969 is a prime.

It is a super-2 number, since 2×1525362481² = 4653461396884950722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

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 1525362481.

It is not an unprimeable number, because it can be changed into a prime (1525362431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100855 + ... + 114988.

It is an arithmetic number, because the mean of its divisors is an integer number (196849728).

Almost surely, 2^1525362481 is an apocalyptic number.

It is an amenable number.

1525362481 is a deficient number, since it is larger than the sum of its proper divisors (49435343).

1525362481 is a wasteful number, since it uses less digits than its factorization.

1525362481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216071.

The product of its digits is 57600, while the sum is 37.

The square root of 1525362481 is about 39055.8891974053. The cubic root of 1525362481 is about 1151.1299495012.

The spelling of 1525362481 in words is "one billion, five hundred twenty-five million, three hundred sixty-two thousand, four hundred eighty-one".