2145425403 has 32 divisors (see below), whose sum is σ = 3198569472. Its totient is φ = 1267980800.

The previous prime is 2145425363. The next prime is 2145425459. The reversal of 2145425403 is 3045245412.

It is a cyclic number.

It is not a de Polignac number, because 2145425403 - 2⁹ = 2145424891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2145425003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 452083 + ... + 456803.

It is an arithmetic number, because the mean of its divisors is an integer number (99955296).

Almost surely, 2^2145425403 is an apocalyptic number.

2145425403 is a deficient number, since it is larger than the sum of its proper divisors (1053144069).

2145425403 is a wasteful number, since it uses less digits than its factorization.

2145425403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5075.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 2145425403 is about 46318.7370617982. The cubic root of 2145425403 is about 1289.7468411334.

Subtracting 2145425403 from its reverse (3045245412), we obtain a square (899820009 = 29997²).

The spelling of 2145425403 in words is "two billion, one hundred forty-five million, four hundred twenty-five thousand, four hundred three".