1525474000 has 40 divisors (see below), whose sum is σ = 3688600968. Its totient is φ = 610188800.

The previous prime is 1525473997. The next prime is 1525474001. The reversal of 1525474000 is 4745251.

It can be written as a sum of positive squares in 4 ways, for example, as 17239104 + 1508234896 = 4152^2 + 38836^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 1525474000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1525474001) 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, 379369 + ... + 383368.

Almost surely, 2^1525474000 is an apocalyptic number.

1525474000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1525474000 is an abundant number, since it is smaller than the sum of its proper divisors (2163126968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1525474000 is an equidigital number, since it uses as much as digits as its factorization.

1525474000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762760 (or 762744 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 1525474000 is about 39057.3168561283. The cubic root of 1525474000 is about 1151.1580017913.

The spelling of 1525474000 in words is "one billion, five hundred twenty-five million, four hundred seventy-four thousand".