1525346490 has 32 divisors (see below), whose sum is σ = 3663397440. Its totient is φ = 406473984.

The previous prime is 1525346489. The next prime is 1525346491. The reversal of 1525346490 is 946435251.

It is an interprime number because it is at equal distance from previous prime (1525346489) and next prime (1525346491).

It is not an unprimeable number, because it can be changed into a prime (1525346491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27597 + ... + 61743.

It is an arithmetic number, because the mean of its divisors is an integer number (114481170).

Almost surely, 2^1525346490 is an apocalyptic number.

1525346490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1525346490 is an abundant number, since it is smaller than the sum of its proper divisors (2138050950).

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

1525346490 is a wasteful number, since it uses less digits than its factorization.

1525346490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35646.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 1525346490 is about 39055.6844774227. The cubic root of 1525346490 is about 1151.1259268981.

The spelling of 1525346490 in words is "one billion, five hundred twenty-five million, three hundred forty-six thousand, four hundred ninety".