1525379740 has 24 divisors (see below), whose sum is σ = 3391727472. Its totient is φ = 574260480.

The previous prime is 1525379701. The next prime is 1525379753. The reversal of 1525379740 is 479735251.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 2242866 + ... + 2243545.

It is an arithmetic number, because the mean of its divisors is an integer number (141321978).

Almost surely, 2^1525379740 is an apocalyptic number.

1525379740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1525379740 is an abundant number, since it is smaller than the sum of its proper divisors (1866347732).

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

1525379740 is a wasteful number, since it uses less digits than its factorization.

1525379740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4486437 (or 4486435 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 43.

The square root of 1525379740 is about 39056.1101493736. The cubic root of 1525379740 is about 1151.1342910434.

The spelling of 1525379740 in words is "one billion, five hundred twenty-five million, three hundred seventy-nine thousand, seven hundred forty".