145649265825 has 144 divisors (see below), whose sum is σ = 288636553856. Its totient is φ = 63479116800.

The previous prime is 145649265821. The next prime is 145649265829. The reversal of 145649265825 is 528562946541.

It is an interprime number because it is at equal distance from previous prime (145649265821) and next prime (145649265829).

It is not a de Polignac number, because 145649265825 - 2² = 145649265821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145649265821) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 110256165 + ... + 110257485.

Almost surely, 2^145649265825 is an apocalyptic number.

145649265825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145649265825 is a deficient number, since it is larger than the sum of its proper divisors (142987288031).

145649265825 is a wasteful number, since it uses less digits than its factorization.

145649265825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784 (or 1756 counting only the distinct ones).

The product of its digits is 20736000, while the sum is 57.

The spelling of 145649265825 in words is "one hundred forty-five billion, six hundred forty-nine million, two hundred sixty-five thousand, eight hundred twenty-five".