1545420125 has 8 divisors (see below), whose sum is σ = 1928684472. Its totient is φ = 1236336000.

The previous prime is 1545420101. The next prime is 1545420131. The reversal of 1545420125 is 5210245451.

It can be written as a sum of positive squares in 4 ways, for example, as 15202201 + 1530217924 = 3899^2 + 39118^2 .

It is not a de Polignac number, because 1545420125 - 2²⁸ = 1276984669 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 6181556 + ... + 6181805.

It is an arithmetic number, because the mean of its divisors is an integer number (241085559).

Almost surely, 2^1545420125 is an apocalyptic number.

It is an amenable number.

1545420125 is a deficient number, since it is larger than the sum of its proper divisors (383264347).

1545420125 is an equidigital number, since it uses as much as digits as its factorization.

1545420125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12363376 (or 12363366 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 1545420125 is about 39311.8318703161. The cubic root of 1545420125 is about 1156.1535609851.

Adding to 1545420125 its reverse (5210245451), we get a palindrome (6755665576).

The spelling of 1545420125 in words is "one billion, five hundred forty-five million, four hundred twenty thousand, one hundred twenty-five".