1525381090 has 16 divisors (see below), whose sum is σ = 2746570680. Its totient is φ = 609955840.

The previous prime is 1525381079. The next prime is 1525381139. The reversal of 1525381090 is 901835251.

It can be written as a sum of positive squares in 4 ways, for example, as 1491427161 + 33953929 = 38619^2 + 5827^2 .

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, 10380 + ... + 56200.

Almost surely, 2^1525381090 is an apocalyptic number.

1525381090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1525381090 is a deficient number, since it is larger than the sum of its proper divisors (1221189590).

1525381090 is a wasteful number, since it uses less digits than its factorization.

1525381090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49157.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 1525381090 is about 39056.1274321969. The cubic root of 1525381090 is about 1151.1346306377.

The spelling of 1525381090 in words is "one billion, five hundred twenty-five million, three hundred eighty-one thousand, ninety".