1525378480 has 40 divisors (see below), whose sum is σ = 3550045104. Its totient is φ = 609542400.

The previous prime is 1525378451. The next prime is 1525378571. The reversal of 1525378480 is 848735251.

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

It is a super-2 number, since 2×1525378480² = 4653559014494220800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75895 + ... + 93865.

Almost surely, 2^1525378480 is an apocalyptic number.

1525378480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1525378480 is an abundant number, since it is smaller than the sum of its proper divisors (2024666624).

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

1525378480 is a wasteful number, since it uses less digits than its factorization.

1525378480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19045 (or 19039 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 1525378480 is about 39056.0940187316. The cubic root of 1525378480 is about 1151.1339740886.

The spelling of 1525378480 in words is "one billion, five hundred twenty-five million, three hundred seventy-eight thousand, four hundred eighty".