1205425705 has 16 divisors (see below), whose sum is σ = 1579756608. Its totient is φ = 875704000.

The previous prime is 1205425691. The next prime is 1205425723. The reversal of 1205425705 is 5075245021.

It is not a de Polignac number, because 1205425705 - 2⁵ = 1205425673 is a prime.

It is a super-2 number, since 2×1205425705² = 2906102260549494050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40110 + ... + 63400.

It is an arithmetic number, because the mean of its divisors is an integer number (98734788).

Almost surely, 2^1205425705 is an apocalyptic number.

It is an amenable number.

1205425705 is a deficient number, since it is larger than the sum of its proper divisors (374330903).

1205425705 is a wasteful number, since it uses less digits than its factorization.

1205425705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24248.

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 1205425705 is about 34719.2411351400. The cubic root of 1205425705 is about 1064.2577369598.

The spelling of 1205425705 in words is "one billion, two hundred five million, four hundred twenty-five thousand, seven hundred five".