1306235525 has 48 divisors (see below), whose sum is σ = 1883236608. Its totient is φ = 880320000.

The previous prime is 1306235507. The next prime is 1306235537. The reversal of 1306235525 is 5255326031.

It is not a de Polignac number, because 1306235525 - 2⁶ = 1306235461 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1306235491 and 1306235500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4648385 + ... + 4648665.

It is an arithmetic number, because the mean of its divisors is an integer number (39234096).

Almost surely, 2^1306235525 is an apocalyptic number.

It is an amenable number.

1306235525 is a deficient number, since it is larger than the sum of its proper divisors (577001083).

1306235525 is a wasteful number, since it uses less digits than its factorization.

1306235525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 657 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 1306235525 is about 36141.8804851103. The cubic root of 1306235525 is about 1093.1350768217.

The spelling of 1306235525 in words is "one billion, three hundred six million, two hundred thirty-five thousand, five hundred twenty-five".