1525051138 has 16 divisors (see below), whose sum is σ = 2543014656. Its totient is φ = 681163920.

The previous prime is 1525051127. The next prime is 1525051141. The reversal of 1525051138 is 8311505251.

It is a Harshad number since it is a multiple of its sum of digits (31).

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, 945256 + ... + 946867.

It is an arithmetic number, because the mean of its divisors is an integer number (158938416).

Almost surely, 2^1525051138 is an apocalyptic number.

1525051138 is a deficient number, since it is larger than the sum of its proper divisors (1017963518).

1525051138 is a wasteful number, since it uses less digits than its factorization.

1525051138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892169.

The product of its (nonzero) digits is 6000, while the sum is 31.

The square root of 1525051138 is about 39051.9031290410. The cubic root of 1525051138 is about 1151.0516248094.

Adding to 1525051138 its reverse (8311505251), we get a palindrome (9836556389).

The spelling of 1525051138 in words is "one billion, five hundred twenty-five million, fifty-one thousand, one hundred thirty-eight".